Micro, grow + calmag is alot of nitrogen in the mix. Thats an npk of 3.5-.5-3.5, without the calmag factored in.
Maybe try bloom and micro at 1:1, which is an npk of 2.5-2.5-2.5 or all 3 equal(npk 2.3-2-3.7) parts has vegged well for me.
Also, light height and just the genetics could play a...